Add support for recognising both of the Creative Commons public-domain
tools, even though they are not strictly speaking licenses.
CC By-ND-SA
</xsl:when>
+ <!-- Creative Commons' public-domain tools are not actually licences, may well be used -->
+ <xsl:when test=". = 'http://creativecommons.org/about/cc0'">
+ CC0 (public domain)
+ </xsl:when>
+ <xsl:when test=". = 'http://creativecommons.org/about/pdm2'">
+ CC PDL (public domain)
+ </xsl:when>
+
<xsl:otherwise>
[unknown]
</xsl:otherwise>